Steam and gas governor



(No Model.) 2 Sheets-Sheet 1.

T. SHAW.

STEAM AND GAS GOVERNOR. No. 373,616. h Patented Nov. 22, 1887.

M Fi m;

(No'ModeL) 2 Sheets-Sheet 2.

' T, SHAW.

STEAM AND GAS GOVERNOR. No. 373,616. TPatented Nov. 22, 188.7.

g g e WITNESSES.-

i yfl J%W UgI EN OR 3 MM m NITED STATES THOMAS SHAYV, OF PHILADELPHIA, PENNSYLVANIA.

STEAM AND GAS GQVERNOR.

SPECIFICATION forming part of Letters Patent No. 373,616, dated November 22, 1887.

Application filed April 24, 1885.

To all whom, it may concern:

Be it known that I, THOMAS SHAW, of the c ty and county of Philadelphia, Pennsylvan1a, have invented a new and Improved Steam and Gas Governor for Regulating the Quantity of Gas and Controlling Pressure of Steam; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawlngs, and to the letters of reference marked thereon.

My invention consists in the combination of a float-regulatiug gas-valve with a fluid column and the gas-chambers, all arranged to operate as hereinafter described, the same be ing an improvement on my patent of April 18, 1882, N 0. 256,508.

The object of the invention is to regulate and control gas under high pressure and to feed gas fuel to steam-boilers, furnaces, 850., in proper regulated quantities, according to the requ1rements of each case.

In order to enable others to use and pracface my invention, I will proceed to describe its construction and operation. On reference to the accompanying drawings, which form part of the specification, Figure 1 represents a side view of the governor with the base in section through center. Fig. 2 is a vertical section through center of gas-chamber and float-regulating gas-valve.

Similar letters refer to similar parts.

a and b are two cast-iron cylinders flanged and bolted together at c to form gas-chamber, and are bored for the reception of solid-metal float-valve. d, which plays vertically in said chamber, actuated by rise and fall of mercury from mercury-column e, from a source hereinafter explained. The upper end of valvefloat dis of valve configuration, closing against seat h. The gas-current is in the direction indicated by the arrows. The gas-inlet is located on the side at g.

a, Fig. 1, is cast-iron baseor mercury-chamber that is secured to wall by screws or otherwise. The mercury is shown at m, and the chamber is provided with a tube, 2', that connects said chamber with the gas-valve cylinder a, Figs. 1 and 2, and has passageway shown from cylinder at to tube i, and is pro Serial No. 163,352. (No model.)

vided with screw-valve Z, to choke the said passage-way against a vibrating or fluctuating current.

It is a pipe thatleads tosteam-boiler or other pressure appliance that causes pressure to be exerted in mercury-chamber m, forcing the mercury up the tube 6 and into the cylinder a, causing valve (1 to rise and partially or entirely close valve d against its seat h, and thus out off the supply of gas at any predetermined maximum point.

The governor is connected with any source of gas-pressure by pipe 9, and pipe f is connected with any appliance that is arranged for the combustion of gases in a furnace, while pipe 70 is connected with a steam-boiler or other source of pressure actuated by heat connected with said furnace.

The maximum pressure of cutoff is predetermined, which, in the case of steam, is controlled by the height of mercury-column 12. Each 2.04 inches of rise equals one pound pressure. On starting the gas-flame in the ordinary Way by gas that passes through said governor, the governor will remain quiescent until near the maximum point, when the mercury will be caused to rise through pipe i into cylinder (1, causing valve d to rise and partially cut off the gas-supply, which prevents further rise of pressure, causing the valve to play in narrow limits, with such variations in the supply as the requirements demand, governing the pressure entirely without any reference to safety-valves and without the useless waste that generally attends the use of gas fuel without this governing fea ture.

It will be evident that various liquids can be used to actuate the float; but mercury is the most suitable. I therefore do not wish to confine myself to the exact con figuration here shown.

What I claim, and desire to secure by Let ters Patent, is

The combination of a gas-chamber having inlet and outlet pipes, the latter being provided with'a valveseat, a float-valve situated in said chamber and adapted to engage with said valve-seat, an enlarged mercury-reservoir separate from said chamber and connected therewith by a pipe, 2', and apipe-com of the gas at the exit-pipe, substantially as necti0n, as k, between the boiler or equivaset forth.

lent source of pressure and the reservoir,

whereby the pressure from the boiler upon 5 said mercury in the reservoir forces the same THOMAS SHAW.

Witnesses:

more or less into the gas-chamber, thereby I WM. GARWOOD, floating the valve and regulating the passage CHAS. ELDRIDGE. 

